Was told that this would do both headlights and taillights. That is INCORRECT. When I received box it specifically said "headlight wig-wag flashing system". Other than that, it works great. You have to cut the headlight wires but just follow the diagram and you'll be fine. I was nervous so I called the customer service number. They told me exactly what to do without making me feel like an idiot. Wire connectors, electrical tape, and extra length of 14 gauge wire would all be helpful as the power wire they give you is only like 18 inches long - which makes it hard to wire up to your battery. I purchased extra wire at Lowe's for like $7.00 or something.

I recently got this for my 2003 Jeep Grand Cherokee. The shipping was way slow, but I am sure it was because of the holidays. It took me about 2 hours to hook everything up on the Jeep, but I was a little too meticulous with the interior install. I mounted the switch housing inside a dash pocket and ran the wires through the firewall as instructed. You will need a voltmeter to do this install effectively but once I got it hooked to power, it worked flawlessly. I would highly recommend this to anyone needing the extra "get out of my WAYYYY!!" statement for their vehicles.